Run: 2026-07-25-01KYCQPRDRXP65C9BMBN9XMDDN

Run Details

Model:: Claude Opus 5 (Reasoning, Low)
Test:: Data extraction
Scenario:: Contextual pronoun
Duration:: 3.7s
Cost:: $0.002560
Provider:: Amazon Bedrock

Evaluation summary

Score	Evaluator	Details Link
Fail	Matches text	(details)
Pass	Matches Regex	(details)
no eval	Overall

Model input

User/Human

Who does "he" refer to in the last sentence? Only return the name.

Tom and Jerry were playing in the yard. Spike, the dog, was watching them from his kennel. Suddenly, he started barking loudly.

Model response

**Spike**

The verb "barking" points to the dog, Spike, who was watching from his kennel — and he's also the most recently mentioned singular male subject.

Evaluation details

Result	Evaluator	Details	Meta Data
Fail	Matches text	Case sensitive: Spike	n/a
Pass	Matches Regex	/\bSpike\b/	n/a
no eval